Codemaster #1
Subtitle: how to write and decode top-secret messages
By: Marvin Miller.
Series: Codemaster -- 1
Publisher: Scholastic
Published: 1998
Place of publication: New York
Number of pages: 69
ISBN-13: 9780590373869
Subjects: Cryptography -- Juvenile literature.; Ciphers -- Juvenile literature.; Writing.
Genres: Juvenile literature.
Other titles: Boys' life.